When To Use 2flute, 3flute And 4flute End Mills | The
Mar 24, 2016#0183;#32;As a note, 2 flute end mills are more versatile, especially if you use a roughing end mill then switch to a normal 2 flute end mill and upping your speed for the finish pass. Bottom line, need to have an assortment of good high quality end mills available for different materials, speeds and feeds.